Sep 07, 2009 7:37 AM EST

The Nationals are focused on improving their middle infield defense.

Washington would love to sign Orlando Hudson if he becomes a free agent this winter, but could move Cristian Guzman to second base if they are unable to acquire the Dodgers infielder.

Ian Desmond, one of the team's top prospects, is a possibility to play shortstop in 2010.

The Nationals have been concerned about Guzman's ability to go left all season, something they believe a foot injury has hampered.

"Looking back on it, I think that the problem that he has had with his foot has probably been there longer than [what we thought]," interim manager John Riggleman said. "I think he has played with some discomfort. ... I have to admire him. He has played through it."

Via MLBlogs Network